What type of video formats does the NEXUS support?

* Acceptable stream types:

o MPEG-1 System Stream or MPEG-2 Program Stream (consisting of a single elementary video stream with an optional single elementary audio stream)

NOTE: Transport stream is not possible.

o Elementary video stream

* Three video resolutions (pixels) are allowed. Other resolutions are not supported.

o 352 x 240 (Horizontal x Vertical)

o 352 x 480

o 720 x 480

* Picture rate must be 29.97 pictures per second.

* A maximum bit rate of 10 Mb/s is allowed. Higher rates are not supported.

* National TV Standards Committee (NTSC) with 4:3 aspect ratio required.

* 4:2:0 sampling format required. (Main profile at Main or Low level, 10 Mb/s max)

* IBBP group of pictures (GOP) structure recommended for best quality (30 frame maximum GOP size).

* Encode header information in stream every few seconds to aid in error recovery.

* Audio, if present, must be encoded into the MPEG file using Audio layer II.

* Audio may be encoded at a 32, 44.1, or 48KHz sampling frequency. LEIGHTRONIX recommends an audio sampling rate of 44.1 KHz for optimal performance.

* MPEG filenames may contain up to 27 characters (no spaces) in addition to the required ".mpg" extension.

What type of image files does the NEXUS support for use with the messaging feature?

* Recommended slide resolutions (pixels)

Depending on your display requirements, slides for the NEXUS may be created in four different sizes. PC monitors utilize a different pixel shape than television monitors, so slides may appear stretched when translated from a PC to a TV. To avoid this problem, slides of pictures and graphics should be created in a resolution of 720 x 540, 800 x 600, or 640 x 480 pixels. For slides containing only text or that are not susceptible to aspect distortion (such as a solid background), use a resolution of 720 x 480 pixels.

* Slide filenames may contain up to 27 characters (no spaces) in addition to the required ".jpg" extension.